A novel process for printing high quality, high resolution, multi-color images on fibrous or porous materials or other ink absorbing materials, or on materials having high surface tension with a liquid ink, and especially over garments, is disclosed. The process is effected by applying a wetting composition, prior to, concomitant with and/or subsequent to applying an ink composition and formation of the images. Pre-printing and printing systems for executing the above process are further disclosed.

An ink jet textile printing ink contains at least one water-soluble dye selected from the group consisting of acid dyes, reactive dyes, and direct dyes, a nonionic surfactant with a content in the range of 0.05% by mass to 3.0% by mass relative to the total mass of the ink, and an anionic surfactant with a content in the range of 1 ppm by mass to 100 ppm by mass relative to the total mass of the ink.

A novel process for printing high quality, high resolution, multi-color images on fibrous or porous materials or other ink absorbing materials, or on materials having high surface tension with a liquid ink, and especially over garments, is disclosed. The process is effected by applying a wetting composition, prior to, concomitant with and/or subsequent to applying an ink composition and formation of the images. Pre-printing and printing systems for executing the above process are further disclosed.

An ink jet textile printing penetrant includes a water-soluble organic solvent; a surfactant; and one type or two or more types selected from the group consisting of a chelating agent and an aromatic compound.

An ink jet ink composition includes: a colorant including a compound (A) represented by formula (1) below; an anionic dispersant; water; a surfactant; and a water-soluble organic solvent. In high-performance liquid chromatography (HPLC) analysis of the colorant at a measurement wavelength of 500 nm, the peak area of a compound (B) represented by formula (2) is 1.4% or less based on 100% of the total peak area of the colorant, and the peak area of a compound (C) represented by formula (3) is 0.8% or less based on 100% of the total peak area of the colorant. The water-soluble organic solvent includes a glycerol and a glycol.

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An ink jet textile printing ink contains at least one water-soluble dye selected from the group consisting of acid dyes, reactive dyes, and direct dyes, a nonionic surfactant with a content in the range of 0.05% by mass to 3.0% by mass relative to the total mass of the ink, and an anionic surfactant with a content in the range of 1 ppm by mass to 100 ppm by mass relative to the total mass of the ink.

An ink jet textile printing penetrant includes a water-soluble organic solvent; a surfactant; and one type or two or more types selected from the group consisting of a chelating agent and an aromatic compound.